216746575009 has 2 divisors, whose sum is σ = 216746575010. Its totient is φ = 216746575008.

The previous prime is 216746574997. The next prime is 216746575033. The reversal of 216746575009 is 900575647612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214832250000 + 1914325009 = 463500^2 + 43753^2 .

It is a cyclic number.

It is not a de Polignac number, because 216746575009 - 2¹⁵ = 216746542241 is a prime.

It is not a weakly prime, because it can be changed into another prime (216746575049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108373287504 + 108373287505.

It is an arithmetic number, because the mean of its divisors is an integer number (108373287505).

Almost surely, 2^216746575009 is an apocalyptic number.

It is an amenable number.

216746575009 is a deficient number, since it is larger than the sum of its proper divisors (1).

216746575009 is an equidigital number, since it uses as much as digits as its factorization.

216746575009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 216746575009 in words is "two hundred sixteen billion, seven hundred forty-six million, five hundred seventy-five thousand, nine".